Sundial. Cast from the original, ca. 1929 Rome, Museo della Civiltà Romana, inv. M.C.R. n. 2897. A band with the signs of the zodiac runs along the edge of the clock. Its inner surface is divided into 12 equal segments to determine the 12 hours of the day, by means of a "style", according to the latitude and the given period of the year.